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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: Giúp em vs mn!!!!!!!!!!!!!!!!!!!! 4$x^{2}$ – 3x – 1 – 3$x^{2}$ – 2x + 5

Toán Lớp 8: Giúp em vs mn!!!!!!!!!!!!!!!!!!!!
4$x^{2}$ – 3x – 1
– 3$x^{2}$ – 2x + 5

Comments ( 2 )

  1. Mong cho lời giải hay nhất ❤️⭐️
    toan-lop-8-giup-em-vs-mn-4-2-3-1-3-2-2-5

  2. 4x^2 – 3x – 1
    = 4x^2 – 4x + x – 1
    = 4x(x-1) + (x-1)
    = (x-1)(4x+1)
    _____________________
    -3x^2 – 2x + 5
    = -3x^2 + 3x – 5x + 5
    = -3x(x-1) – 5(x-1)
    = (x-1)(-3x-5)

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222-9+11+12:2*14+14 = ? ( )